Top Definition
when a girl has huge boobs and they're kinda smushed together, it looks like one giant boob aka an uberboob.

what causes uberboob?
push up or sports bra
a top that's too small
enormous boobs that just dont fit into anything
omg marissa's boobs are so huge, she shouldn't wear that top it gives her an uberboob
by Shanomnom October 18, 2009
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